Stove-frame.



E. HARTER.

STOYE FRAME.

APPLICATION F|LED1UNE10.1916.

1,217,939. f Patented Mar.fs,1917.

f 1 STATES PATENT OFFICE.

EVAN HARTER,. F DETROIT, MICHIGAN, ASSIGNOR T0 DETROIT STOVE WORKS,.OF

. DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

Specification of Letters Patent.

STOVE-FRAME.

Patented Mar. 6, 1917.

-Application led .Tune l0, 1916. Serial No. 102,844.

and State: of Michigan, have invented certain new and usefulImprovements in Stove- Frames, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to stove frames, and it is the object of theinvention toform the structure from sheet-metal, vas.hereinafter l setforth.

' outwardly-extending In the drawings: 'gure 1 is a, plan view of theframe.7 v Fig. 2 is 'a' sectionaly perspective view Fig. 3 is a planview, showing the manner of cutting the bar to form a corner and Fig. 4is a section on line w- Fig. 2,

showing the manner of securing the corner.

In the present state of the'art it is usual` -to form the supportingbase frames for sheet-metal stoves of angle bars or other rolled barsofv structural shape. As the frames are of annular formand'usuallyrectangular, 4it is necessary to make special provision forthe forming of the-corners, by providing either corner brackets for joini'rig separate sides or other means. I have plied the construction bforming a b a'i of structural 'shape from olded sheet-metal, and byforming a frame of this bar without the necessity of additional cornerbrackets. 1

In detail, I preferably form the bar of a T-section, havmg the headportion of the T arranged in a vertical plane and the Stem..

portion extending laterally. This T is formed by folding sheet-metal,with an outer ply A, returnbent portions Band B and arallel portions Cand- C', with a return end or seam D for joining their outer ends. To vform the frame, the stem-portion'of the T formed by the parallel plies Cand C is gered or c ut away at the corners, as indicated at E Fig.

- '2. In-a stove, a supporting frame comprising a T-bar formedof foldedplies of 3. The "vertical or head portion A is then bent to form theangle, and the lies C and C of the stem are telescopica y engaged witheachother so as to overlap, as shown in Fig. 4. vThe rivet F,A or othersecuring device may then vbe engaged with the overlapping plies to holdthe same fromgdisplacement. With the'kyconstructionas described, thelaterally-extending portion of the bar will constitute a seat orsupportfor the superstructure, and theoverlapping portions of"thefsheet-metal"which are secured to each other -greatly strengthen thecorners. Thisv overlapping does not produce any objec- .4

tionable offset in the plane of support for l the superstrupture, as thegage of the single ply ofsheet-metal i-s comparatively slight; andfurthermore if desired, the metal may be slightly deiiectedtgbrin'gthefupper lies as indicated in Fig. What I claim as my invention is:l

1. In a stove, a supporting .frame comprising a bar of structural shape,formed of folded plies of Sheet-'metaLthe laterally-exof adjacent sidesinto exactly the p ane,

tending portion of said' bar being cut at the corners and the pliesthereof overlapped.A

sheet-metal, the head portion of the T extending in a vertical plane andthe stem portion extending laterally, said stem portiony beingcut at thecorners of the frame and having the plies thereof overlapped.

3. In a stove, a supporting frame comprising a T-bar 'formed of foldedplies of sheetmetal, the head portion of the T being arrangedinavertical plane and the 'stem portion extending laterally, said stemportion being cut to form a corner, with the plies thereof overlapped,and securing means for said overlapping plies.

4. In a stove, a supporting frame comprising a T-bar formed of foldedpl-ies of sheet-metal, the head portion of the T being arranged in v a'vertical plane and beingl formed from a center of the blank which is anoverlap, amil4 means 'for securing said 'f returnbent at opposite edgesthereof, and plies to each other. 13 l the ,stem portion of the Textending laterally VIn testimony whereof I aiix my signature. Y and'formed by parallel portions of the EVAN HARTER L 5' b1ank,seamedtogether at their outer edges, seid stem portion being out to permit ofWitnesses:

l folding the heed.- to form a corner, and the WILFRED MERTON,

pljesfof the web being interengagedto form FRANK WELBON. v.

